. . . "174.1824"^^ . "174182.4"^^ . . "hydraulic recoil piston"@en . "1875"^^ . "The 3\"/21 caliber gun (spoken \"three-inch-twenty-one-caliber\") was a field gun for United States Navy and United States Marine Corps. They were a simple horse-drawn artillery gun that were mostly used by the Marines. The guns have also been described as Boat Guns but information on type of mounts has not been found."@en . . . . "United States"@en . "3\"/21 caliber field gun"@en . . "50634820"^^ . . . . . "bore"@en . . . "at 19.5\u00B0 elevation"@en . "Wheeled"@en . "Yes"@en . . "3"^^ . . "The 3\"/21 caliber gun (spoken \"three-inch-twenty-one-caliber\") was a field gun for United States Navy and United States Marine Corps. They were a simple horse-drawn artillery gun that were mostly used by the Marines. The guns have also been described as Boat Guns but information on type of mounts has not been found."@en . . "1874"^^ . . . "3 Inch / 21 Caliber Field Gun"@en . . . . . . "1083558528"^^ . . "* Field gun\n* Naval gun"@en . "1.76784"^^ . "1767.84"^^ . . "* US Navy\n* US Marine Corps"@en . . "Yes"@en . "2561"^^ . . "8"^^ . . . . . . .